| 释义 |
ground tissue
ground tissuen. The tissue of a plant other than the epidermis, periderm, and vascular tissues, consisting primarily of collenchyma, parenchyma, and sclerenchyma. Cortex and pith are types of ground tissue.ground tissue
ground tissue[′grau̇nd ‚tish·ü] (botany) In leaves and young roots and stems, any tissue other than the epidermis and vascular tissues. ground state
state [stāt] condition or situation.alpha state the state of relaxation and peaceful awakefulness associated with prominent alpha brain wave activity.anxiety state the condition of experiencing undue anxiety, as in anxiety disorders.excited state the condition of a nucleus, atom, or molecule produced by the addition of energy to the system as the result of absorption of photons or of inelastic collisions with other particles or systems.ground state the condition of lowest energy of a nucleus, atom, or molecule.persistent vegetative state a condition of profound nonresponsiveness in the wakeful state caused by brain damage at whatever level and characterized by a nonfunctioning cerebral cortex, the absence of any discernible adaptive response to the external environment, akinesia, mutism, and inability to signal; the electroencephalogram may be isoelectric or show abnormal activity. Vegetative states raise ethical questions regarding appropriate care, use of resources, and allowing a patient to die.refractory state a condition of subnormal excitability of muscle and nerve following excitation.resting state the physiologic condition achieved by complete bed rest for at least 1 hour.steady state dynamic equilibrium.ground statethe normal, inactivated state of an atom from which, on activation, the singlet, triplet, and other excited states are derived.ground state (grownd stāt) The normal, inactivated state of an atom from which, on activation, the singlet, triplet, and other excited states are derived. ground state the condition of a molecule when at its lowest energy level.ground state (grownd stāt) The normal, inactivated state of an atom from which, on activation, the singlet, triplet, and other excited states are derived. ThesaurusSeechlorenchyma |